Your failure to give a straight answer is noted. However, since you imply that the "real border" is the problem and that it needs to be fixed, in other words, the TTC has practically nothing to do with illegal immigration.
I gave you a straight answer. And they are linked. Its a four scenario situation. Borders--no borders and TTC-noTTC. Cross link them and you get four different scenarios.
Right now we have no borders and no TTC